*{
    padding: 0;
    margin: 0;
}

.header{
    display: flex;
    height: 60px;
    justify-content: space-between;
}

.header-left{
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 100%;
    width: 430px;
}

.header-right{
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 100%;
    width: 140px;
    margin-right: 10px;

}

.header-left-text{
    font-size: 13px;
    color: black;
    text-decoration-line: none;
}
.header-left-text2{
    font-size: 13px;
    color: black;
    text-decoration-line: none;
}

.header-left-text:hover{
    color: #4e6ef2;
}

.header-right-btn{
    color: white;
    width: 45px;
    height: 25px;
    font-size: 12px;
    background: #5273ff;
    border-radius: 5px;
    border: 1px solid transparent;
}

.header-right-btn:hover{
    background: #3f52b8;
}

.settings{
    width: 80px;
    height: 140px;
    position: absolute;
    top: 50px;
    margin-left: 1380px;
    border-radius: 8px;
    z-index: 20;
    display: flex;
    flex-flow: column nowrap;
    justify-content: space-around;
    align-items: center;
    margin-top: 2px;
    box-shadow:  0 0 2px 2px #eeeeee;/*阴影*/
}